private void InternalAddRange(IActionItem[] items)
{
lock (lockObject)
{
// stack pre-cleanup
UnsafeDisbranchedCleanup();
// add items
foreach (var item in items)
actionItems.Add(item);
// post-cleanup
IActionItem[] discarded = null;
if (capacity >= 0 && actionItems.Count > capacity)
{
// stack is overloaded
discarded = actionItems
.Take(actionItems.Count - capacity)
.ToArray();
int itemsToRemove = actionItems.Count - capacity;
for (int i = 0; i < itemsToRemove; ++i)
{
actionItems[0].Freeze();
actionItems.RemoveAt(0);
}
}
ResetIndexOnTop();
// raise event to notify of cleaned up items
if (discarded != null)
{
OnActionItemsDiscarded(new DiscardedActionItemsEventArgs<IActionItem>(
ActionItemDiscardType.Swallowed,
discarded));
}
// raise event to notify of added items
var added = items;
if (capacity >= 0 && items.Length > capacity)
added = items.Skip(items.Length - capacity).ToArray();
OnActionItemsAdded(new ActionItemsEventArgs<IActionItem>(added));
}
}